apport information

** Attachment added: "Lsusb.txt"

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  Autonegotiation fails for various Lenovo notebooks when resuming
  inside the docking station

Status in linux package in Ubuntu:

Bug description:
  The autonegotiation fails sporadically for various Lenovo notebooks
  (e.g. T450s, T550, W540) when resuming inside the docking station. The
  speed ethtool reports is 10Mb/s, full duplex, even though that is not
  the speed the connected switch uses. So the systems are unable to
  send/receive any packages.

  Issuing the command "ethtool -r eth0" does not lead to a successful
  renegotiation. To get a correct link, I have to either undock the
  notebook for about 15 seconds, and then re-dock it, or disconnect the
  LAN cable for about 15 seconds, and then reconnect the cable.

  In my case the problem appears about one time in 10-20 suspend/resume

  I found the problem in the 4.15 Ubuntu Bionic kernel, but the problem
  is still present in kernel 5.0-rc8.

  I've done a git bisect and the following commit seems to have
  introduced the problem:

  commit 04e04009bb01502f8023c707d7569ea42fba903b
  Author: Rafael J. Wysocki <>
  Date:   Fri Feb 9 22:55:28 2018 +0100

      ACPI / EC: Restore polling during noirq suspend/resume phases


      [ Upstream commit 3cd091a773936c54344a519f7ee1379ccb620bee ]

      Commit 662591461c4b (ACPI / EC: Drop EC noirq hooks to fix a
      regression) modified the ACPI EC driver so that it doesn't switch
      over to busy polling mode during noirq stages of system suspend and
      resume in an attempt to fix an issue resulting from that behavior.

      However, that modification introduced a system resume regression on
      Thinkpad X240, so make the EC driver switch over to the polling mode
      during noirq stages of system suspend and resume again, which
      effectively reverts the problematic commit.

      Fixes: 662591461c4b (ACPI / EC: Drop EC noirq hooks to fix a regression)
      Reported-by: Markus Demleitner <>
      Tested-by: Markus Demleitner <>
      Signed-off-by: Rafael J. Wysocki <>
      Signed-off-by: Sasha Levin <>
      Signed-off-by: Greg Kroah-Hartman <>
      Signed-off-by: Kamal Mostafa <>
      Signed-off-by: Khalid Elmously <>

  I have reverted the commit in the Ubuntu Bionic kernel, and cannot
  reproduce the problem any longer.

  I have also opened a corresponding upstream bugreport on
  ApportVersion: 2.20.1-0ubuntu2.18
  Architecture: amd64
   /dev/snd/controlC1:  m525025    2871 F.... pulseaudio
   /dev/snd/controlC0:  m525025    2871 F.... pulseaudio
  CurrentDesktop: Unity
  DistroRelease: Ubuntu 16.04
  HibernationDevice: RESUME=/dev/mapper/VolGroup00-swaplv
  MachineType: LENOVO 20BWS00V00
  Package: linux (not installed)
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.15.0-45-generic 
root=/dev/mapper/VolGroup00-rootlv ro net.ifnames=0 biosdevname=0 
ipv6.disable=1 quiet splash usbcore.authorized_default=0 i915.enable_psr=0 
i915.enable_rc6=0 crashkernel=384M-:128M vt.handoff=7
  ProcVersionSignature: Ubuntu 4.15.0-45.48~16.04.1-generic 4.15.18
   linux-restricted-modules-4.15.0-45-generic N/A
   linux-backports-modules-4.15.0-45-generic  N/A
   linux-firmware                             1.157.21
  Tags:  xenial
  Uname: Linux 4.15.0-45-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: dvi lapadmins projekt-lap
  _MarkForUpload: True 02/27/2018
  dmi.bios.vendor: LENOVO
  dmi.bios.version: JBET68WW (1.32 )
  dmi.board.asset.tag: Not Available 20BWS00V00
  dmi.board.vendor: LENOVO
  dmi.board.version: Not Defined
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: None
dmi:bvnLENOVO:bvrJBET68WW(1.32):bd02/27/2018:svnLENOVO:pn20BWS00V00:pvrThinkPadT450s:rvnLENOVO:rn20BWS00V00:rvrNotDefined:cvnLENOVO:ct10:cvrNone: ThinkPad T450s 20BWS00V00
  dmi.product.version: ThinkPad T450s
  dmi.sys.vendor: LENOVO

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